Malware Analysis Report

2025-08-10 19:09

Sample ID 220115-kd8x5addd5
Target bfa2ac832261df46640df025737b8c4a.exe
SHA256 81bc6e0cf586a808ef3ee9c5ace20622f414853a8606007357104c39f5fa5693
Tags
arkei default discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

81bc6e0cf586a808ef3ee9c5ace20622f414853a8606007357104c39f5fa5693

Threat Level: Known bad

The file bfa2ac832261df46640df025737b8c4a.exe was found to be: Known bad.

Malicious Activity Summary

arkei default discovery spyware stealer

Arkei

Arkei Stealer Payload

Downloads MZ/PE file

Deletes itself

Reads user/profile data of web browsers

Loads dropped DLL

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Checks processor information in registry

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-15 08:30

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-01-15 08:30

Reported

2022-01-15 08:32

Platform

win10v2004-en-20220113

Max time kernel

4264953s

Max time network

9s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe

"C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 time.windows.com udp
US 8.8.8.8:53 displaycatalog.mp.microsoft.com udp
IE 20.54.110.249:443 displaycatalog.mp.microsoft.com tcp
US 8.8.8.8:53 arc.msn.com udp
US 52.184.215.140:443 arc.msn.com tcp
IE 20.54.110.249:443 displaycatalog.mp.microsoft.com tcp
US 8.8.8.8:53 slscr.update.microsoft.com udp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
US 8.8.8.8:53 fe3cr.delivery.mp.microsoft.com udp
NL 40.119.148.38:123 time.windows.com udp

Files

memory/3556-130-0x000000000074D000-0x000000000075E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-15 08:30

Reported

2022-01-15 08:32

Platform

win7-en-20211208

Max time kernel

122s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe"

Signatures

Arkei

stealer arkei

Arkei Stealer Payload

stealer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Downloads MZ/PE file

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe

"C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bfa2ac832261df46640df025737b8c4a.exe" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
US 209.209.115.111:80 209.209.115.111 tcp

Files

memory/1368-55-0x000000000067B000-0x000000000068C000-memory.dmp

memory/1368-57-0x0000000000400000-0x000000000055F000-memory.dmp

memory/1368-56-0x0000000000220000-0x000000000023C000-memory.dmp

memory/1368-58-0x0000000076371000-0x0000000076373000-memory.dmp

\ProgramData\sqlite3.dll

MD5 e477a96c8f2b18d6b5c27bde49c990bf
SHA1 e980c9bf41330d1e5bd04556db4646a0210f7409
SHA256 16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512 335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

\ProgramData\mozglue.dll

MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

\ProgramData\msvcp140.dll

MD5 109f0f02fd37c84bfc7508d4227d7ed5
SHA1 ef7420141bb15ac334d3964082361a460bfdb975
SHA256 334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
SHA512 46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

\ProgramData\vcruntime140.dll

MD5 7587bf9cb4147022cd5681b015183046
SHA1 f2106306a8f6f0da5afb7fc765cfa0757ad5a628
SHA256 c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
SHA512 0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

memory/1832-64-0x0000000000000000-mapping.dmp

memory/1768-65-0x0000000000000000-mapping.dmp